20081009600

素因数分解:

$2^6\times 5^2\times {\mathrm{173}}^1\times {\mathrm{72547}}^1$

素因数の和:72742

約数の個数: 84

約数和(自身を含む): 49698136824

約数和(自身を除く): 29617127224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 173, 200, 320, 346, 400, 692, 800, 865, 1384, 1600, 1730, 2768, 3460, 4325, 5536, 6920, 8650, 11072, 13840, 17300, 27680, 34600, 55360, 69200, 72547, 138400, 145094, 276800, 290188, 362735, 580376, 725470, 1160752, 1450940, 1813675, 2321504, 2901880, 3627350, 4643008, 5803760, 7254700, 11607520, 12550631, 14509400, 23215040, 25101262, 29018800, 50202524, 58037600, 62753155, 100405048, 116075200, 125506310, 200810096, 251012620, 313765775, 401620192, 502025240, 627531550, 803240384, 1004050480, 1255063100, 2008100960, 2510126200, 4016201920, 5020252400, 10040504800, 20081009600]

約数ペア:

[(1, 20081009600), (2, 10040504800), (4, 5020252400), (5, 4016201920), (8, 2510126200), (10, 2008100960), (16, 1255063100), (20, 1004050480), (25, 803240384), (32, 627531550), (40, 502025240), (50, 401620192), (64, 313765775), (80, 251012620), (100, 200810096), (160, 125506310), (173, 116075200), (200, 100405048), (320, 62753155), (346, 58037600), (400, 50202524), (692, 29018800), (800, 25101262), (865, 23215040), (1384, 14509400), (1600, 12550631), (1730, 11607520), (2768, 7254700), (3460, 5803760), (4325, 4643008), (5536, 3627350), (6920, 2901880), (8650, 2321504), (11072, 1813675), (13840, 1450940), (17300, 1160752), (27680, 725470), (34600, 580376), (55360, 362735), (69200, 290188), (72547, 276800), (138400, 145094)]